深圳市中立信电子科技有限公司

AD5700BCPZ-RL7

接口 - 专用 HART Industrial Comm IC, Low Power HART Modem

GENERAL DESCRIPTION AD5700BCPZ-RL7

The AD5700/AD5700-1 are single-chip solutions, designed

and specified to operate as a HART® FSKhalf-duplex modem,

complying with the HART physical layer requirements. The

AD5700/AD5700-1 integrateall of the necessary filtering, signal

detection, modulating, demodulating and signal generation

functions, thus requiring fewexternal components.

FEATURES AD5700BCPZ-RL7

HART-compliant fully integrated FSK modem

1200 Hz and 2200 Hz sinusoidal shift frequencies

115 μA maximum supply current in receive mode

Suitable for intrinsically safe applications

Integrated receive band-pass filter

Minimal external components required

Clocking optimized for various system configurations

Ultralow power crystal oscillator (60 μA maximum)

External CMOS clock source

Precision internal oscillator (AD5700-1only)

Buffered HART output—extra drive capability

8 kV HBM ESD rating

1.71 V to 5.5 V power supply

1.71 V to 5.5 V interface

−40°C to +125°C operation

4 mm × 4 mm LFCSP package

HART physical layer compliant

UART interface

APPLICATIONS AD5700BCPZ-RL7

Field transmitters

HART multiplexers

PLC and DCS analog I/O modules

HART network connectivity